What should be the air flow on a VAZ-2114: standards and parameters

High fuel consumption of the VAZ 2114 today is one of the most common problems faced by owners of domestic cars. The fuel consumption rate of the machine can be found in the technical documentation.

For the injection “fourteenth” engine, the consumption rate is within 8.5 liters per 100 km in the urban cycle and about 6.5-7 liters on the highway. But more often, VAZ 2114 owners record completely different indicators that go far beyond its limits. What is the most common problem and are there effective ways to fix it? Sometimes we are faced with the acute question of how to reduce fuel consumption on a VAZ 2114 8-valve injector?

What is the real gasoline consumption of VA3 2114?

Today it is a real rarity when a car fully complies with the specifications of the technical documentation. Most often, the manufacturer indicates data obtained during testing of the car under ideal conditions. The actual fuel consumption of almost all modern cars is 1-2 liters higher than the norm. You should not neglect important factors that contribute to increasing the “appetite” of the machine.

These factors are:

1. Vehicle operating conditions.
2. Driving manner and style.
3. The presence of various types of malfunctions.
4. Fuel quality.

High fuel consumption VAZ 2114 injector 8 valves, how much is this in numbers? Most owners of the 8-valve “fourteenth” note consumption in the range of 8.5 – 9 liters in the urban cycle and 7-7.5 liters per 100 km on the highway. This is an average figure that is close to the fuel consumption rate specified by the manufacturer.

Design features of candles

VAZ 2114 spark plugs, as well as any other spark plugs, are a combination of the following structural elements:

1. Metal body. On one side there is a hexagonal protrusion that serves to tighten the spark plug with a wrench, and on the other side there is a thread cut necessary for screwing into the cylinder head. The housing absorbs more than half of the heat generated by the spark plug at the moment of firing, after which it transfers it to the cylinder head.
2. Insulator. Made of heat-resistant ceramics with the addition of aluminum oxide. Serves as a dielectric layer between the spark plug contacts.
3. Thermal cone skirt. Located at the bottom of the insulator. Receives and transfers 21% of the heat generated during candle operation.
4. The electrodes are central, located inside the spark plug head, and side, L-shaped and hanging over the central one. Serve for sparking.
5. Thrust washer and O-rings.

Spark Plug Design All components of a spark plug are extremely important for its operation, but special attention is paid to its electrodes. To increase service life in combination with better electrical conductivity and corrosion resistance, they are most often made from alloys with a high nickel content, and on high-end candles they are additionally coated with silver, palladium or gold

The main signs and reasons for the increase in fuel consumption of the VAZ 2114

If it’s summer and you drive on normal roads, but at the same time you notice an abnormal “appetite” of the fuel-injected 8-valve VAZ 2114, then it’s time to conduct a full diagnosis of the car’s condition. Excessive fuel consumption is easy to notice not only by the frequency of visits to gas stations. Often, owners note some oddities in the operation of the engine. Unstable operation of the “heart” of the car is accompanied by black smoke from the exhaust pipe and the presence of popping noises in the muffler or intake manifold.

Black smoke from the exhaust pipe most often occurs due to the formation of an overly rich fuel mixture. This disease occurs due to clogged injectors, faults in the ECU, and low-quality spark plugs.

Gasoline consumption can increase, both for a simple and harmless reason, and in the event of serious malfunctions in the car system. For example, a clogged fuel filter increases the fuel consumption of the “fourteenth” by as much as 2-3 liters. Low tire pressure and non-standard wheel radius also contribute. It has long been a known fact that the larger the radius of the wheel, the more effort must be made to turn it.

Other reasons for excessive fuel consumption include:

• malfunction of the oxygen supply sensor;
• low level compression;
• problems with the air flow sensor;
• late ignition, clogged catalyst.

Operating principle of the air flow sensor

The sensor is based on a platinum wire only 70 micrometers thick.
It is hidden in a special tube located in front of the throttle valve. When air hits it, the wire cools. To restore normal temperature, a certain charge of electricity passes through it, according to the size of its ECU, and finds out exactly how much fuel the engine needs at the moment. Due to the fact that air comes directly from the atmosphere, dirt regularly settles on the wire. It is this that, for the most part, contributes to the fact that the sensor becomes unusable. The latest models of mass air flow sensors, however, have an automatic cleaning system.

A significant drawback of the described design is its inability to repair. As a result, sooner or later, the expense of money becomes inevitable.

Ways to reduce fuel consumption of a VAZ 2114 with an injector

What to do if the VAZ 2114 has high fuel consumption and the reasons are unknown? Of course, it is best to go to a service station and undergo a full computer diagnostic. The fact is that the VAZ 2114 injection system with 8 valves contains a large number of different sensors. A failure in the operation of one of them can lead to the fact that the owner of the car will rack his brains for a long time in search of faults, but will never find them without special software.

One of the most effective ways to reduce gasoline consumption by a car and its subsequent control is timely prevention of vehicle components and components and scheduled maintenance.

Not every faulty sensor affects the “appetite” of the car. The lambda probe plays the greatest role in the excessive consumption of the fuel-air mixture. This device regulates the formation of a combustible mixture based on the volume of oxygen in the exhaust. The presence of errors in the operation of the lambda probe can be determined by the on-board computer. This device most often fails due to poor fuel quality and an incorrectly set advance angle.

The car owner can independently eliminate or partially reduce the high fuel consumption of a VAZ 2114 injector with an 8-valve engine through the following measures:

1. Regularly replace the air and fuel filter. In this case, preference should be given to factory elements.
2. Monitor the condition of the spark plugs and replace them according to the recommendations.
3. Periodically measure the tire pressure level and monitor the condition of the brake system parts.
4. Refuel your car only at time-tested gas stations.
5. Maintain cleanliness of components and assemblies of the engine compartment.

Cleaning instructions

As practice shows, cleaning the mass air flow sensor is one of the most effective methods of restoring the functionality of the controller. Therefore, if the sensor breaks down, it is not necessary to change it, especially since such a pleasure today is not cheap. This procedure is necessary because over time it becomes dirty and shows other parameters.

So, how to clean the mass air flow sensor at home with your own hands:

1. You will need a Phillips head screwdriver; use it to loosen the clamp securing the line from the air intake.
2. Next, dismantle the corrugation and visually assess the condition of the system. You may see condensation or traces of engine fluid under the corrugation.
3. Carefully inspect the inside of the controller. If everything is normal with the system, then there will be no traces of leaks or contamination. As practice shows, the sensitive element often breaks precisely due to an excess of contamination. In order not to avoid problems of this kind in the future, it is necessary to periodically replace the air filter. This procedure is carried out in accordance with technical regulations. Engine fluid may enter the controller as a result of an increased level of consumables in the crankcase. Accordingly, this occurs as a result of a clogged oil separator in the ventilation system.
4. The regulator itself is fixed with two bolts on the line. The removal procedure is carried out using an open-end wrench. At this stage, if you are sure that the device has failed, you can replace it.
5. You can see the entrance on which there will be a sealing rubber band designed to protect the device from the suction of dirty air flow. If you do not have a seal, it may have caught on the filter element. Accordingly, this will lead to the regulator input grid being contaminated.
6. Clean the mesh using available materials. To do this, you can use a regular toothpick or toothbrush. After cleaning, the seal can be put back and the regulator can be put back in place.

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Useful video

You can learn more about the possibilities of reducing fuel consumption by watching the video below:

Maintaining the proper condition of the car in the future will save the owner from hassle and unexpected expenses. You just need to promptly replace clogged filters and damaged spark plugs, and then increased fuel consumption will bypass your car.

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Hello. There is a VAZ 2114 mileage 180,000 km ECU M73 stock ident I317DA02. Disabled DC firmware E-2. Gasoline 95. The essence of the problem. Increased air consumption at idle is about 15 kg, the ignition timing fluctuates from 1.5 to 12 and the engine load is 27-30%, resulting in uneven engine operation. This is observed on all firmwares. First of all, I decided to check the mass air flow sensor due to the increased air flow, I checked the readings 0.99-1.00 with a multimeter (the mass air flow sensor is normal). Then I replaced the knock sensor with a completely new one in order to correct the ignition angle, but this did not help either. Replaced the IAC, still the same. I adjusted the valves, but it didn't help. I've already tried everything, looked for air leaks, checked the throttle valve. All the same. Tell me where to look for the reason. I am attaching the captured log.

Why do you need a mass air flow sensor?

This monitoring device is designed to determine the volume of air entering the combustion chambers of the power unit. As you know, without this the engine, in principle, will not be able to work. The manufacturer installed it near the air filter.

During operation, the engine receives 1 part gasoline and 14 parts air. As a result, the most optimal mixture is formed, allowing the power plant to operate as efficiently as possible.

If this proportion is not respected for one reason or another, the following begins to happen:

• excessive gasoline consumption;
• power drop.

Therefore, correct air mass flow is one of the basic conditions for the proper functioning of the vehicle. This parameter is calculated in the ECU based on the MAF readings.

Depending on how hard the driver of the car presses on the accelerator, the air is supplied more intensely. For its part, the mass air flow sensor measures its incoming volumes, and the data is sent to the on-board computer. The latter regulates the flow of gasoline accordingly.

What should be the air flow for the VAZ-2114

During normal operation of the sensor, the engine of this machine consumes from 10±0.5 kg of air per hour of operation. If the quantity is miniaturized, then the car’s dynamics are miniaturized, which saves fuel, but when it increases, fuel, on the contrary, is greatly consumed. In cold weather, this can lead to problems with starting the engine. If the sensor characteristics deviate from the real ones, then the engine begins to work intermittently, or even does not start at all. What can cause a sensor to deviate? Let's try to find out.

How does the MAF work?

This device is a small wire made of platinum alloy. The size of this cord is only 70 microns. It is installed in a special tube, which is located in front of the throttle valve.

Due to constant use, this wire is constantly covered in dirt. But modern sensors have a self-cleaning system. Dirt is one of the reasons why the device fails, but there are other signs of a malfunctioning MAF sensor. Although the design of the device is as simple and reliable as possible, it also fails. Its only drawback is that it is not suitable for repair. If the sensor fails, it is simply replaced with a new one.

Causes of sensor failure: when replacement is required

The error of the sensor significantly aggravates the functioning of the car as a whole, but mainly it affects the operation of the controller. When using a sensitive controller, this can lead to floating idle speed, but with all this there will be no noticeable dips during acceleration. In general, the readings should be normal, so it is necessary to monitor this and, in case of malfunction, replace the device.

The crankcase ventilation system can cause inaccurate readings. If the throttle is closed, the gases are diverted through the line into a free space. A certain amount of these gases goes into the idle line, where it comes into contact with the mass air flow sensor. Then the resin settles on the resistor, which leads to errors in the sensor readings.

Mass air flow at idle on Prior 1.6 V16

mass air flow

at idle speed on Prior 1.6 V16 oxygen sensor voltage 1 period of sensor signal...

conclusions

Limit standards and air consumption indicators for the VAZ-2114 Samara-2 engine were established. It is worth noting that the amount of oxygen ingress is influenced by many factors that need to be taken into account when repairing and servicing the power unit.

The mass air flow sensor is necessary for efficient engine operation in different modes. The function of this device is to create a working mixture of air and gasoline vapor. The task of the VAZ 2114 air flow sensor is to measure two interrelated indicators:

1. Amount of air consumed;
2. Reaction time.

The accuracy of measuring the air consumption of the engine allows the controller to determine in what proportion it is necessary to mix air with fuel. If the sensor produces incorrect values, the resulting air-fuel mixture does not correspond to the current engine operating mode. This leads to a decrease in power, an increase in fuel consumption, and a deterioration in the dynamics and response of the car. The response of controllers from different manufacturers to these parameters may differ.

Diagnosis of failure

If the air flow sensor breaks down, the symptoms of the malfunction can be very different. First of all, fuel consumption will increase; another symptom may be floating engine speed.

In addition to these signs of failure, the following can be identified:

• failures in the operation of the power unit;
• slower car acceleration, poor dynamics;
• the power unit can turn off when changing gears;
• decrease in power and increase in gasoline consumption;
• a heated internal combustion engine is more difficult to start;
• the Check light appears on the control panel.

The last symptom may not appear if the controller fails completely. How to check the MAF on your own? Diagnostics consists of identifying the impulse.

If the impulse is low, this indicates:

• possible short circuit or broken wiring;
• regulator failure;
• incorrect operation of the ECU;
• oxidation of contacts;
• that the controller is not connected.

Clogged air flow regulator

Check Features

To understand how the mass air flow sensor is checked, first find the device located in the engine compartment. On VAZ 2114 cars the regulator is located on the air filter line. How to check the sensor yourself?

First, the controller must be disconnected from the network; to do this, press on the wire fastening. Start the engine and let it run for a while. You need to drive the car a little - if it accelerates faster than usual, then this indicates a failure of the controller.

The diagnostic procedure can be carried out by replacing the firmware of the control unit. There is a small stop on the throttle; you need to place a plate under it, its thickness should be about 1 mm, thanks to this it will be possible to increase the speed. Then the power supply to the regulator is also turned off; when the device is operational, the motor should stall (video author - Vanechek 01rus).